Lancaster Antiques has dated this piece to the Edwardian era.
The top measures 18.5cm on the main part, but 20.5cm if you include the slightly angled edges (see Photo 1).

It is 23.5 cm in height, and the base is 15cm in diameter.
It is in beautiful condition, bar two tiny knocks on the base that are barely visible. It has been polished but not lacquered.
Postage and packing within the UK mainland only is included in the price, but quotes can be given for outside areas.
Lancaster Antiques has dated this piece to the Edwardian era.
You can view the stock and full dealer information on the Lancaster Antiques Profile Page